diff --git a/prettyjson/prettyjson-tests.ts b/prettyjson/prettyjson-tests.ts
new file mode 100644
index 0000000000..4df6b1fc87
--- /dev/null
+++ b/prettyjson/prettyjson-tests.ts
@@ -0,0 +1,18 @@
+/// <reference path="prettyjson.d.ts" />
+
+var options: prettyjson.IOptions,
+	input: string,
+	output: string;
+
+
+input = 'This is a string';
+output = prettyjson.render(input);
+
+output = prettyjson.render(input, {}, 4);
+
+output = prettyjson.render(['first string', ['nested 1', 'nested 2'], 'second string']);
+
+output = prettyjson.render({param1: 'first string', param2: 'second string'});
+
+output = prettyjson.render({first_param: {subparam: 'first string', subparam2: 'another string'}, second_param: 'second string'});
+
diff --git a/prettyjson/prettyjson.d.ts b/prettyjson/prettyjson.d.ts
new file mode 100644
index 0000000000..f1f0dbf23f
--- /dev/null
+++ b/prettyjson/prettyjson.d.ts
@@ -0,0 +1,59 @@
+// Type definitions for prettyjson
+// Project: https://github.com/rafeca/prettyjson
+// Definitions by: Wael BEN ZID EL GUEBSI <https://github.com/benzid-wael/>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+
+declare module PrettyJSON {
+
+  /**
+   * Defines prettyjson version
+   */
+  export var version: string;
+
+  /**
+   * Render pretty json.
+   *
+   * @param data {Object} Data to prettify.
+   * @param options {IOptions} Hash with different options to configure the renderer.
+   * @param indentation {number} Indentation size.
+   *
+   * @return {string} pretty serialized json data ready to display.
+     */
+  export function render(data: Object, options?: IOptions, indentation?: number): string;
+
+  /**
+   * Render pretty json from a string.
+   *
+   * @param data {string} Serialized JSON data to prettify.
+   * @param options {IOptions} Hash with different options to configure the renderer.
+   * @param indentation {number} Indentation size.
+   *
+   * @return {string} pretty serialized json data ready to display.
+     */
+  export function renderString(data: string, options?: IOptions, indentation?: number): string;
+
+  export interface IOptions {
+
+    /**
+     * Define behavior for Array objects
+     */
+    emptyArrayMsg ?: string;  // default: (empty)
+    inlineArrays ?: boolean;
+
+    /**
+     * Color definition
+     */
+    noColor ?: boolean;
+    keysColor ?: string;
+    dashColor ?: string;
+    numberColor ?: string;
+    stringColor ?: string;
+
+    defaultIndentation ?: number;
+  }
+}
+
+declare module "prettyjson" {
+    export = PrettyJSON;
+}